./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/unroll-4.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/unroll-4.wvr.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bb07434636f33664cc09ed992a41516efeea5f96121c916fb8904844e76d9fcd --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 20:03:15,172 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 20:03:15,224 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-11 20:03:15,229 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 20:03:15,230 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 20:03:15,263 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 20:03:15,263 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 20:03:15,264 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 20:03:15,264 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 20:03:15,264 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 20:03:15,265 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 20:03:15,265 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 20:03:15,268 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 20:03:15,273 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 20:03:15,274 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 20:03:15,274 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 20:03:15,274 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 20:03:15,274 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 20:03:15,275 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 20:03:15,275 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 20:03:15,275 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 20:03:15,277 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 20:03:15,277 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 20:03:15,278 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 20:03:15,278 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 20:03:15,278 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 20:03:15,278 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 20:03:15,279 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 20:03:15,279 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 20:03:15,279 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 20:03:15,279 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 20:03:15,280 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 20:03:15,280 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 20:03:15,280 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 20:03:15,280 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 20:03:15,281 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 20:03:15,281 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 20:03:15,282 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 20:03:15,282 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 20:03:15,282 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 20:03:15,283 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 20:03:15,283 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 20:03:15,283 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb07434636f33664cc09ed992a41516efeea5f96121c916fb8904844e76d9fcd [2024-10-11 20:03:15,514 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 20:03:15,532 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 20:03:15,537 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 20:03:15,538 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 20:03:15,538 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 20:03:15,540 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/unroll-4.wvr.c [2024-10-11 20:03:16,997 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 20:03:17,174 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 20:03:17,174 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/unroll-4.wvr.c [2024-10-11 20:03:17,181 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/af49756d0/6cc38d4a16e640fbb1bc6103e0790602/FLAGfdb67e38a [2024-10-11 20:03:17,193 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/af49756d0/6cc38d4a16e640fbb1bc6103e0790602 [2024-10-11 20:03:17,195 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 20:03:17,197 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 20:03:17,198 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 20:03:17,198 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 20:03:17,203 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 20:03:17,204 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 08:03:17" (1/1) ... [2024-10-11 20:03:17,205 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70b1ee8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:03:17, skipping insertion in model container [2024-10-11 20:03:17,205 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 08:03:17" (1/1) ... [2024-10-11 20:03:17,232 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 20:03:17,522 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 20:03:17,533 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2024-10-11 20:03:17,534 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7eb095fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:03:17, skipping insertion in model container [2024-10-11 20:03:17,534 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 20:03:17,535 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-10-11 20:03:17,536 INFO L158 Benchmark]: Toolchain (without parser) took 339.01ms. Allocated memory is still 157.3MB. Free memory was 85.3MB in the beginning and 121.8MB in the end (delta: -36.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-10-11 20:03:17,537 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 157.3MB. Free memory is still 130.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 20:03:17,538 INFO L158 Benchmark]: CACSL2BoogieTranslator took 336.82ms. Allocated memory is still 157.3MB. Free memory was 85.2MB in the beginning and 122.5MB in the end (delta: -37.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-10-11 20:03:17,539 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 157.3MB. Free memory is still 130.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 336.82ms. Allocated memory is still 157.3MB. Free memory was 85.2MB in the beginning and 122.5MB in the end (delta: -37.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 103]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/unroll-4.wvr.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bb07434636f33664cc09ed992a41516efeea5f96121c916fb8904844e76d9fcd --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 20:03:19,485 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 20:03:19,560 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-10-11 20:03:19,565 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 20:03:19,565 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 20:03:19,596 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 20:03:19,597 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 20:03:19,597 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 20:03:19,598 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 20:03:19,601 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 20:03:19,601 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 20:03:19,602 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 20:03:19,602 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 20:03:19,602 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 20:03:19,603 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 20:03:19,603 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 20:03:19,603 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 20:03:19,603 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 20:03:19,603 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 20:03:19,604 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 20:03:19,604 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 20:03:19,605 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 20:03:19,605 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 20:03:19,606 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 20:03:19,606 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 20:03:19,606 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-11 20:03:19,606 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 20:03:19,606 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-11 20:03:19,606 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 20:03:19,607 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 20:03:19,607 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 20:03:19,607 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 20:03:19,607 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 20:03:19,607 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 20:03:19,608 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 20:03:19,608 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 20:03:19,608 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 20:03:19,610 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 20:03:19,610 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-11 20:03:19,610 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-11 20:03:19,610 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 20:03:19,610 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 20:03:19,611 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 20:03:19,611 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 20:03:19,611 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-11 20:03:19,611 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb07434636f33664cc09ed992a41516efeea5f96121c916fb8904844e76d9fcd [2024-10-11 20:03:19,948 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 20:03:19,971 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 20:03:19,975 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 20:03:19,976 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 20:03:19,976 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 20:03:19,978 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/unroll-4.wvr.c [2024-10-11 20:03:21,423 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 20:03:21,605 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 20:03:21,608 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/unroll-4.wvr.c [2024-10-11 20:03:21,620 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/8a60cfef8/9398a3603e7e4138bcbf1b0a991962a1/FLAG680b91009 [2024-10-11 20:03:21,637 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/8a60cfef8/9398a3603e7e4138bcbf1b0a991962a1 [2024-10-11 20:03:21,640 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 20:03:21,642 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 20:03:21,643 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 20:03:21,643 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 20:03:21,650 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 20:03:21,652 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 08:03:21" (1/1) ... [2024-10-11 20:03:21,654 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66bdaa50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:03:21, skipping insertion in model container [2024-10-11 20:03:21,655 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 08:03:21" (1/1) ... [2024-10-11 20:03:21,680 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 20:03:21,923 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 20:03:21,941 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-10-11 20:03:21,947 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 20:03:21,973 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 20:03:21,981 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 20:03:22,017 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 20:03:22,038 INFO L204 MainTranslator]: Completed translation [2024-10-11 20:03:22,039 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:03:22 WrapperNode [2024-10-11 20:03:22,039 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 20:03:22,040 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 20:03:22,040 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 20:03:22,040 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 20:03:22,047 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:03:22" (1/1) ... [2024-10-11 20:03:22,063 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:03:22" (1/1) ... [2024-10-11 20:03:22,096 INFO L138 Inliner]: procedures = 25, calls = 27, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 147 [2024-10-11 20:03:22,098 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 20:03:22,099 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 20:03:22,099 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 20:03:22,099 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 20:03:22,110 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:03:22" (1/1) ... [2024-10-11 20:03:22,110 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:03:22" (1/1) ... [2024-10-11 20:03:22,117 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:03:22" (1/1) ... [2024-10-11 20:03:22,132 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-10-11 20:03:22,132 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:03:22" (1/1) ... [2024-10-11 20:03:22,133 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:03:22" (1/1) ... [2024-10-11 20:03:22,142 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:03:22" (1/1) ... [2024-10-11 20:03:22,146 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:03:22" (1/1) ... [2024-10-11 20:03:22,148 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:03:22" (1/1) ... [2024-10-11 20:03:22,149 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:03:22" (1/1) ... [2024-10-11 20:03:22,152 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 20:03:22,155 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 20:03:22,159 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 20:03:22,159 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 20:03:22,160 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:03:22" (1/1) ... [2024-10-11 20:03:22,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 20:03:22,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 20:03:22,189 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 20:03:22,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 20:03:22,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 20:03:22,237 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-11 20:03:22,237 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-11 20:03:22,237 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-11 20:03:22,237 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-11 20:03:22,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-11 20:03:22,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-10-11 20:03:22,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-11 20:03:22,237 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-10-11 20:03:22,237 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-10-11 20:03:22,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 20:03:22,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 20:03:22,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-10-11 20:03:22,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-10-11 20:03:22,239 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 20:03:22,355 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 20:03:22,358 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 20:03:22,793 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 20:03:22,794 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 20:03:23,078 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 20:03:23,078 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-11 20:03:23,078 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 08:03:23 BoogieIcfgContainer [2024-10-11 20:03:23,079 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 20:03:23,080 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 20:03:23,080 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 20:03:23,084 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 20:03:23,084 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 08:03:21" (1/3) ... [2024-10-11 20:03:23,085 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@343cb06a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 08:03:23, skipping insertion in model container [2024-10-11 20:03:23,085 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:03:22" (2/3) ... [2024-10-11 20:03:23,086 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@343cb06a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 08:03:23, skipping insertion in model container [2024-10-11 20:03:23,086 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 08:03:23" (3/3) ... [2024-10-11 20:03:23,089 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-4.wvr.c [2024-10-11 20:03:23,104 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 20:03:23,105 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2024-10-11 20:03:23,105 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 20:03:23,164 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-11 20:03:23,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 44 places, 40 transitions, 94 flow [2024-10-11 20:03:23,224 INFO L124 PetriNetUnfolderBase]: 3/38 cut-off events. [2024-10-11 20:03:23,225 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-11 20:03:23,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 38 events. 3/38 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 61 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 26. Up to 2 conditions per place. [2024-10-11 20:03:23,229 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 40 transitions, 94 flow [2024-10-11 20:03:23,232 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 37 transitions, 86 flow [2024-10-11 20:03:23,243 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 20:03:23,250 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@78e1e491, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 20:03:23,250 INFO L334 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2024-10-11 20:03:23,260 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 20:03:23,260 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-10-11 20:03:23,260 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 20:03:23,261 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:03:23,261 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 20:03:23,262 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-10-11 20:03:23,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:03:23,267 INFO L85 PathProgramCache]: Analyzing trace with hash 510363, now seen corresponding path program 1 times [2024-10-11 20:03:23,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:03:23,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [486977549] [2024-10-11 20:03:23,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:03:23,279 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:03:23,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:03:23,282 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:03:23,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-10-11 20:03:23,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:03:23,352 INFO L255 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-11 20:03:23,356 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:03:23,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-11 20:03:23,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:03:23,429 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:03:23,430 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:03:23,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [486977549] [2024-10-11 20:03:23,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [486977549] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:03:23,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:03:23,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-11 20:03:23,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990775338] [2024-10-11 20:03:23,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:03:23,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 20:03:23,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:03:23,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 20:03:23,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 20:03:23,504 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-10-11 20:03:23,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:03:23,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:03:23,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-10-11 20:03:23,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:03:23,676 INFO L124 PetriNetUnfolderBase]: 101/253 cut-off events. [2024-10-11 20:03:23,676 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-10-11 20:03:23,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 452 conditions, 253 events. 101/253 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1129 event pairs, 75 based on Foata normal form. 1/191 useless extension candidates. Maximal degree in co-relation 390. Up to 175 conditions per place. [2024-10-11 20:03:23,684 INFO L140 encePairwiseOnDemand]: 36/40 looper letters, 20 selfloop transitions, 2 changer transitions 0/34 dead transitions. [2024-10-11 20:03:23,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 34 transitions, 124 flow [2024-10-11 20:03:23,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 20:03:23,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 20:03:23,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 69 transitions. [2024-10-11 20:03:23,695 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.575 [2024-10-11 20:03:23,696 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 86 flow. Second operand 3 states and 69 transitions. [2024-10-11 20:03:23,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 34 transitions, 124 flow [2024-10-11 20:03:23,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 34 transitions, 116 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-11 20:03:23,700 INFO L231 Difference]: Finished difference. Result has 36 places, 34 transitions, 76 flow [2024-10-11 20:03:23,703 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=36, PETRI_TRANSITIONS=34} [2024-10-11 20:03:23,707 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, -5 predicate places. [2024-10-11 20:03:23,707 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 34 transitions, 76 flow [2024-10-11 20:03:23,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:03:23,708 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:03:23,708 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 20:03:23,712 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-10-11 20:03:23,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:03:23,909 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-10-11 20:03:23,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:03:23,910 INFO L85 PathProgramCache]: Analyzing trace with hash 510364, now seen corresponding path program 1 times [2024-10-11 20:03:23,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:03:23,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1623459310] [2024-10-11 20:03:23,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:03:23,911 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:03:23,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:03:23,912 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:03:23,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-10-11 20:03:23,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:03:23,990 INFO L255 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-11 20:03:23,994 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:03:24,026 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 20:03:24,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:03:24,105 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:03:24,105 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:03:24,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1623459310] [2024-10-11 20:03:24,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1623459310] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:03:24,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:03:24,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 20:03:24,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625399500] [2024-10-11 20:03:24,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:03:24,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 20:03:24,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:03:24,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 20:03:24,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-11 20:03:24,166 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-10-11 20:03:24,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 34 transitions, 76 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:03:24,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:03:24,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-10-11 20:03:24,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:03:24,317 INFO L124 PetriNetUnfolderBase]: 101/255 cut-off events. [2024-10-11 20:03:24,317 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-11 20:03:24,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 445 conditions, 255 events. 101/255 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1131 event pairs, 75 based on Foata normal form. 1/193 useless extension candidates. Maximal degree in co-relation 426. Up to 179 conditions per place. [2024-10-11 20:03:24,320 INFO L140 encePairwiseOnDemand]: 36/40 looper letters, 23 selfloop transitions, 2 changer transitions 0/36 dead transitions. [2024-10-11 20:03:24,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 36 transitions, 130 flow [2024-10-11 20:03:24,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 20:03:24,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 20:03:24,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 72 transitions. [2024-10-11 20:03:24,322 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-10-11 20:03:24,322 INFO L175 Difference]: Start difference. First operand has 36 places, 34 transitions, 76 flow. Second operand 3 states and 72 transitions. [2024-10-11 20:03:24,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 36 transitions, 130 flow [2024-10-11 20:03:24,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 36 transitions, 126 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 20:03:24,326 INFO L231 Difference]: Finished difference. Result has 37 places, 35 transitions, 86 flow [2024-10-11 20:03:24,327 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=37, PETRI_TRANSITIONS=35} [2024-10-11 20:03:24,328 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, -4 predicate places. [2024-10-11 20:03:24,328 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 35 transitions, 86 flow [2024-10-11 20:03:24,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:03:24,329 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:03:24,329 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-10-11 20:03:24,333 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2024-10-11 20:03:24,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:03:24,533 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-10-11 20:03:24,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:03:24,533 INFO L85 PathProgramCache]: Analyzing trace with hash 490475253, now seen corresponding path program 1 times [2024-10-11 20:03:24,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:03:24,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [230229755] [2024-10-11 20:03:24,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:03:24,534 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:03:24,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:03:24,538 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:03:24,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-10-11 20:03:24,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:03:24,598 INFO L255 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 20:03:24,606 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:03:24,626 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 20:03:24,773 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:03:24,773 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:03:25,038 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:03:25,038 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:03:25,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [230229755] [2024-10-11 20:03:25,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [230229755] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:03:25,039 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:03:25,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4] total 7 [2024-10-11 20:03:25,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711216612] [2024-10-11 20:03:25,039 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:03:25,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 20:03:25,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:03:25,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 20:03:25,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-10-11 20:03:25,240 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-10-11 20:03:25,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 35 transitions, 86 flow. Second operand has 9 states, 9 states have (on average 16.11111111111111) internal successors, (145), 9 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:03:25,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:03:25,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-10-11 20:03:25,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:03:25,770 INFO L124 PetriNetUnfolderBase]: 104/264 cut-off events. [2024-10-11 20:03:25,770 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-11 20:03:25,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 474 conditions, 264 events. 104/264 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1191 event pairs, 75 based on Foata normal form. 0/201 useless extension candidates. Maximal degree in co-relation 461. Up to 182 conditions per place. [2024-10-11 20:03:25,773 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 23 selfloop transitions, 11 changer transitions 0/45 dead transitions. [2024-10-11 20:03:25,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 45 transitions, 186 flow [2024-10-11 20:03:25,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 20:03:25,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 20:03:25,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-10-11 20:03:25,778 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4777777777777778 [2024-10-11 20:03:25,779 INFO L175 Difference]: Start difference. First operand has 37 places, 35 transitions, 86 flow. Second operand 9 states and 172 transitions. [2024-10-11 20:03:25,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 45 transitions, 186 flow [2024-10-11 20:03:25,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 45 transitions, 184 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 20:03:25,781 INFO L231 Difference]: Finished difference. Result has 47 places, 45 transitions, 158 flow [2024-10-11 20:03:25,781 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=158, PETRI_PLACES=47, PETRI_TRANSITIONS=45} [2024-10-11 20:03:25,782 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 6 predicate places. [2024-10-11 20:03:25,782 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 45 transitions, 158 flow [2024-10-11 20:03:25,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.11111111111111) internal successors, (145), 9 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:03:25,783 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:03:25,783 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:03:25,786 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2024-10-11 20:03:25,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:03:25,984 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-10-11 20:03:25,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:03:25,985 INFO L85 PathProgramCache]: Analyzing trace with hash 271911380, now seen corresponding path program 1 times [2024-10-11 20:03:25,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:03:25,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1754218591] [2024-10-11 20:03:25,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:03:25,986 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:03:25,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:03:25,989 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:03:25,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-10-11 20:03:26,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:03:26,045 INFO L255 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 20:03:26,048 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:03:26,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-11 20:03:26,084 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:03:26,085 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:03:26,085 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:03:26,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1754218591] [2024-10-11 20:03:26,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1754218591] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:03:26,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:03:26,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 20:03:26,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475626601] [2024-10-11 20:03:26,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:03:26,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 20:03:26,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:03:26,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 20:03:26,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 20:03:26,134 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-10-11 20:03:26,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 45 transitions, 158 flow. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:03:26,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:03:26,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-10-11 20:03:26,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:03:26,245 INFO L124 PetriNetUnfolderBase]: 104/227 cut-off events. [2024-10-11 20:03:26,245 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-10-11 20:03:26,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 459 conditions, 227 events. 104/227 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 816 event pairs, 75 based on Foata normal form. 0/202 useless extension candidates. Maximal degree in co-relation 428. Up to 177 conditions per place. [2024-10-11 20:03:26,248 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 28 selfloop transitions, 5 changer transitions 0/40 dead transitions. [2024-10-11 20:03:26,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 40 transitions, 214 flow [2024-10-11 20:03:26,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 20:03:26,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 20:03:26,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 67 transitions. [2024-10-11 20:03:26,250 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41875 [2024-10-11 20:03:26,250 INFO L175 Difference]: Start difference. First operand has 47 places, 45 transitions, 158 flow. Second operand 4 states and 67 transitions. [2024-10-11 20:03:26,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 40 transitions, 214 flow [2024-10-11 20:03:26,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 40 transitions, 200 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-10-11 20:03:26,253 INFO L231 Difference]: Finished difference. Result has 44 places, 40 transitions, 144 flow [2024-10-11 20:03:26,253 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=144, PETRI_PLACES=44, PETRI_TRANSITIONS=40} [2024-10-11 20:03:26,254 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 3 predicate places. [2024-10-11 20:03:26,254 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 40 transitions, 144 flow [2024-10-11 20:03:26,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:03:26,255 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:03:26,255 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:03:26,259 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2024-10-11 20:03:26,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:03:26,456 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-10-11 20:03:26,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:03:26,456 INFO L85 PathProgramCache]: Analyzing trace with hash 271911381, now seen corresponding path program 1 times [2024-10-11 20:03:26,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:03:26,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [958027430] [2024-10-11 20:03:26,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:03:26,457 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:03:26,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:03:26,458 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:03:26,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-10-11 20:03:26,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:03:26,522 INFO L255 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-11 20:03:26,523 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:03:26,622 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:03:26,623 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:03:26,749 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2024-10-11 20:03:26,835 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:03:26,836 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:03:26,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [958027430] [2024-10-11 20:03:26,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [958027430] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:03:26,838 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:03:26,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2024-10-11 20:03:26,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529266397] [2024-10-11 20:03:26,838 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:03:26,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 20:03:26,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:03:26,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 20:03:26,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-11 20:03:27,071 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-10-11 20:03:27,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 40 transitions, 144 flow. Second operand has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:03:27,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:03:27,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-10-11 20:03:27,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:03:27,400 INFO L124 PetriNetUnfolderBase]: 203/397 cut-off events. [2024-10-11 20:03:27,400 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2024-10-11 20:03:27,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 804 conditions, 397 events. 203/397 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1661 event pairs, 75 based on Foata normal form. 0/331 useless extension candidates. Maximal degree in co-relation 772. Up to 189 conditions per place. [2024-10-11 20:03:27,403 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 42 selfloop transitions, 8 changer transitions 0/56 dead transitions. [2024-10-11 20:03:27,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 56 transitions, 279 flow [2024-10-11 20:03:27,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 20:03:27,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 20:03:27,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 135 transitions. [2024-10-11 20:03:27,405 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-10-11 20:03:27,405 INFO L175 Difference]: Start difference. First operand has 44 places, 40 transitions, 144 flow. Second operand 6 states and 135 transitions. [2024-10-11 20:03:27,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 56 transitions, 279 flow [2024-10-11 20:03:27,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 56 transitions, 273 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 20:03:27,408 INFO L231 Difference]: Finished difference. Result has 48 places, 41 transitions, 165 flow [2024-10-11 20:03:27,408 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=165, PETRI_PLACES=48, PETRI_TRANSITIONS=41} [2024-10-11 20:03:27,409 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 7 predicate places. [2024-10-11 20:03:27,409 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 41 transitions, 165 flow [2024-10-11 20:03:27,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:03:27,409 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:03:27,410 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:03:27,413 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2024-10-11 20:03:27,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:03:27,611 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-10-11 20:03:27,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:03:27,611 INFO L85 PathProgramCache]: Analyzing trace with hash -686388479, now seen corresponding path program 1 times [2024-10-11 20:03:27,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:03:27,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [592356187] [2024-10-11 20:03:27,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:03:27,612 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:03:27,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:03:27,615 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:03:27,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-10-11 20:03:27,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:03:27,672 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-11 20:03:27,673 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:03:27,785 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:03:27,786 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:03:27,893 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2024-10-11 20:03:27,976 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:03:27,976 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:03:27,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [592356187] [2024-10-11 20:03:27,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [592356187] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:03:27,977 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:03:27,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2024-10-11 20:03:27,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986287788] [2024-10-11 20:03:27,977 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:03:27,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 20:03:27,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:03:27,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 20:03:27,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-11 20:03:28,166 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 40 [2024-10-11 20:03:28,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 41 transitions, 165 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:03:28,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:03:28,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 40 [2024-10-11 20:03:28,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:03:28,477 INFO L124 PetriNetUnfolderBase]: 341/609 cut-off events. [2024-10-11 20:03:28,477 INFO L125 PetriNetUnfolderBase]: For 86/106 co-relation queries the response was YES. [2024-10-11 20:03:28,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1356 conditions, 609 events. 341/609 cut-off events. For 86/106 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2365 event pairs, 81 based on Foata normal form. 0/453 useless extension candidates. Maximal degree in co-relation 1322. Up to 411 conditions per place. [2024-10-11 20:03:28,481 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 42 selfloop transitions, 8 changer transitions 0/53 dead transitions. [2024-10-11 20:03:28,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 53 transitions, 296 flow [2024-10-11 20:03:28,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 20:03:28,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 20:03:28,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 115 transitions. [2024-10-11 20:03:28,483 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-10-11 20:03:28,483 INFO L175 Difference]: Start difference. First operand has 48 places, 41 transitions, 165 flow. Second operand 6 states and 115 transitions. [2024-10-11 20:03:28,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 53 transitions, 296 flow [2024-10-11 20:03:28,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 53 transitions, 288 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 20:03:28,485 INFO L231 Difference]: Finished difference. Result has 51 places, 42 transitions, 185 flow [2024-10-11 20:03:28,486 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=185, PETRI_PLACES=51, PETRI_TRANSITIONS=42} [2024-10-11 20:03:28,486 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 10 predicate places. [2024-10-11 20:03:28,486 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 42 transitions, 185 flow [2024-10-11 20:03:28,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:03:28,487 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:03:28,487 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:03:28,491 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2024-10-11 20:03:28,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:03:28,688 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-10-11 20:03:28,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:03:28,688 INFO L85 PathProgramCache]: Analyzing trace with hash -686151335, now seen corresponding path program 1 times [2024-10-11 20:03:28,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:03:28,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [860034975] [2024-10-11 20:03:28,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:03:28,689 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:03:28,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:03:28,690 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:03:28,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-10-11 20:03:28,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:03:28,759 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-11 20:03:28,761 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:03:28,778 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 20:03:29,009 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:03:29,009 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:03:29,574 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:03:29,574 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:03:29,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [860034975] [2024-10-11 20:03:29,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [860034975] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:03:29,575 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:03:29,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2024-10-11 20:03:29,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672816194] [2024-10-11 20:03:29,575 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:03:29,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 20:03:29,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:03:29,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 20:03:29,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-10-11 20:03:31,684 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-10-11 20:03:31,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 42 transitions, 185 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:03:31,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:03:31,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-10-11 20:03:31,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:03:33,201 INFO L124 PetriNetUnfolderBase]: 769/1523 cut-off events. [2024-10-11 20:03:33,201 INFO L125 PetriNetUnfolderBase]: For 136/136 co-relation queries the response was YES. [2024-10-11 20:03:33,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3296 conditions, 1523 events. 769/1523 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 8392 event pairs, 531 based on Foata normal form. 0/1269 useless extension candidates. Maximal degree in co-relation 2237. Up to 485 conditions per place. [2024-10-11 20:03:33,211 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 83 selfloop transitions, 16 changer transitions 0/104 dead transitions. [2024-10-11 20:03:33,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 104 transitions, 545 flow [2024-10-11 20:03:33,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 20:03:33,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-11 20:03:33,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 232 transitions. [2024-10-11 20:03:33,247 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.58 [2024-10-11 20:03:33,247 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 185 flow. Second operand 10 states and 232 transitions. [2024-10-11 20:03:33,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 104 transitions, 545 flow [2024-10-11 20:03:33,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 104 transitions, 530 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-11 20:03:33,254 INFO L231 Difference]: Finished difference. Result has 58 places, 48 transitions, 242 flow [2024-10-11 20:03:33,255 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=242, PETRI_PLACES=58, PETRI_TRANSITIONS=48} [2024-10-11 20:03:33,256 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 17 predicate places. [2024-10-11 20:03:33,256 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 48 transitions, 242 flow [2024-10-11 20:03:33,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:03:33,257 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:03:33,257 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1] [2024-10-11 20:03:33,262 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2024-10-11 20:03:33,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:03:33,458 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-10-11 20:03:33,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:03:33,459 INFO L85 PathProgramCache]: Analyzing trace with hash -887393920, now seen corresponding path program 2 times [2024-10-11 20:03:33,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:03:33,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1203285510] [2024-10-11 20:03:33,459 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 20:03:33,459 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:03:33,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:03:33,462 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:03:33,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-10-11 20:03:33,519 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 20:03:33,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:03:33,521 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-11 20:03:33,522 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:03:33,533 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 20:03:33,823 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:03:33,823 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:03:34,423 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:03:34,423 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:03:34,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1203285510] [2024-10-11 20:03:34,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1203285510] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:03:34,423 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:03:34,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-11 20:03:34,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29023680] [2024-10-11 20:03:34,424 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:03:34,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 20:03:34,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:03:34,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 20:03:34,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2024-10-11 20:03:35,161 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-10-11 20:03:35,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 48 transitions, 242 flow. Second operand has 14 states, 14 states have (on average 16.571428571428573) internal successors, (232), 14 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:03:35,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:03:35,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-10-11 20:03:35,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:03:37,257 INFO L124 PetriNetUnfolderBase]: 743/1494 cut-off events. [2024-10-11 20:03:37,257 INFO L125 PetriNetUnfolderBase]: For 601/608 co-relation queries the response was YES. [2024-10-11 20:03:37,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3638 conditions, 1494 events. 743/1494 cut-off events. For 601/608 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 8308 event pairs, 621 based on Foata normal form. 6/1404 useless extension candidates. Maximal degree in co-relation 2776. Up to 1296 conditions per place. [2024-10-11 20:03:37,266 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 31 selfloop transitions, 29 changer transitions 0/66 dead transitions. [2024-10-11 20:03:37,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 66 transitions, 518 flow [2024-10-11 20:03:37,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-11 20:03:37,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-11 20:03:37,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 373 transitions. [2024-10-11 20:03:37,269 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.444047619047619 [2024-10-11 20:03:37,270 INFO L175 Difference]: Start difference. First operand has 58 places, 48 transitions, 242 flow. Second operand 21 states and 373 transitions. [2024-10-11 20:03:37,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 66 transitions, 518 flow [2024-10-11 20:03:37,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 66 transitions, 510 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 20:03:37,277 INFO L231 Difference]: Finished difference. Result has 81 places, 66 transitions, 478 flow [2024-10-11 20:03:37,277 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=478, PETRI_PLACES=81, PETRI_TRANSITIONS=66} [2024-10-11 20:03:37,278 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 40 predicate places. [2024-10-11 20:03:37,281 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 66 transitions, 478 flow [2024-10-11 20:03:37,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 16.571428571428573) internal successors, (232), 14 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:03:37,282 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:03:37,282 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:03:37,286 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2024-10-11 20:03:37,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:03:37,483 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-10-11 20:03:37,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:03:37,483 INFO L85 PathProgramCache]: Analyzing trace with hash 196794162, now seen corresponding path program 1 times [2024-10-11 20:03:37,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:03:37,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1280393363] [2024-10-11 20:03:37,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:03:37,484 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:03:37,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:03:37,485 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:03:37,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2024-10-11 20:03:37,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:03:37,545 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-11 20:03:37,547 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:03:37,564 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 20:03:37,746 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:03:37,746 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:03:38,426 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:03:38,426 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:03:38,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1280393363] [2024-10-11 20:03:38,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1280393363] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:03:38,426 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:03:38,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2024-10-11 20:03:38,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379145385] [2024-10-11 20:03:38,427 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:03:38,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 20:03:38,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:03:38,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 20:03:38,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-10-11 20:03:39,373 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 40 [2024-10-11 20:03:39,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 66 transitions, 478 flow. Second operand has 11 states, 11 states have (on average 13.0) internal successors, (143), 11 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:03:39,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:03:39,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 40 [2024-10-11 20:03:39,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:03:40,608 INFO L124 PetriNetUnfolderBase]: 835/1489 cut-off events. [2024-10-11 20:03:40,608 INFO L125 PetriNetUnfolderBase]: For 788/808 co-relation queries the response was YES. [2024-10-11 20:03:40,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3814 conditions, 1489 events. 835/1489 cut-off events. For 788/808 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 7021 event pairs, 495 based on Foata normal form. 0/1329 useless extension candidates. Maximal degree in co-relation 3752. Up to 599 conditions per place. [2024-10-11 20:03:40,618 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 86 selfloop transitions, 26 changer transitions 0/114 dead transitions. [2024-10-11 20:03:40,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 114 transitions, 842 flow [2024-10-11 20:03:40,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 20:03:40,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-11 20:03:40,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 203 transitions. [2024-10-11 20:03:40,621 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5075 [2024-10-11 20:03:40,621 INFO L175 Difference]: Start difference. First operand has 81 places, 66 transitions, 478 flow. Second operand 10 states and 203 transitions. [2024-10-11 20:03:40,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 114 transitions, 842 flow [2024-10-11 20:03:40,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 114 transitions, 754 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-10-11 20:03:40,626 INFO L231 Difference]: Finished difference. Result has 84 places, 70 transitions, 474 flow [2024-10-11 20:03:40,627 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=474, PETRI_PLACES=84, PETRI_TRANSITIONS=70} [2024-10-11 20:03:40,627 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 43 predicate places. [2024-10-11 20:03:40,629 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 70 transitions, 474 flow [2024-10-11 20:03:40,629 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.0) internal successors, (143), 11 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:03:40,629 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:03:40,629 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:03:40,633 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2024-10-11 20:03:40,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:03:40,830 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-10-11 20:03:40,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:03:40,830 INFO L85 PathProgramCache]: Analyzing trace with hash -388615602, now seen corresponding path program 1 times [2024-10-11 20:03:40,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:03:40,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [8496589] [2024-10-11 20:03:40,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:03:40,831 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:03:40,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:03:40,832 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:03:40,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2024-10-11 20:03:40,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:03:40,892 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-11 20:03:40,893 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:03:40,955 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:03:40,955 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:03:40,955 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:03:40,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [8496589] [2024-10-11 20:03:40,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [8496589] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:03:40,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:03:40,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 20:03:40,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481917195] [2024-10-11 20:03:40,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:03:40,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 20:03:40,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:03:40,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 20:03:40,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 20:03:40,978 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 40 [2024-10-11 20:03:40,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 70 transitions, 474 flow. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:03:40,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:03:40,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 40 [2024-10-11 20:03:40,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:03:41,182 INFO L124 PetriNetUnfolderBase]: 743/1380 cut-off events. [2024-10-11 20:03:41,182 INFO L125 PetriNetUnfolderBase]: For 768/774 co-relation queries the response was YES. [2024-10-11 20:03:41,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3769 conditions, 1380 events. 743/1380 cut-off events. For 768/774 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 6780 event pairs, 226 based on Foata normal form. 3/1383 useless extension candidates. Maximal degree in co-relation 3712. Up to 1018 conditions per place. [2024-10-11 20:03:41,191 INFO L140 encePairwiseOnDemand]: 36/40 looper letters, 76 selfloop transitions, 5 changer transitions 1/89 dead transitions. [2024-10-11 20:03:41,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 89 transitions, 711 flow [2024-10-11 20:03:41,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 20:03:41,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 20:03:41,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2024-10-11 20:03:41,193 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7 [2024-10-11 20:03:41,193 INFO L175 Difference]: Start difference. First operand has 84 places, 70 transitions, 474 flow. Second operand 3 states and 84 transitions. [2024-10-11 20:03:41,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 89 transitions, 711 flow [2024-10-11 20:03:41,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 89 transitions, 686 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-11 20:03:41,225 INFO L231 Difference]: Finished difference. Result has 83 places, 74 transitions, 498 flow [2024-10-11 20:03:41,226 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=449, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=498, PETRI_PLACES=83, PETRI_TRANSITIONS=74} [2024-10-11 20:03:41,227 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 42 predicate places. [2024-10-11 20:03:41,227 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 74 transitions, 498 flow [2024-10-11 20:03:41,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:03:41,227 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:03:41,228 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1] [2024-10-11 20:03:41,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2024-10-11 20:03:41,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:03:41,431 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-10-11 20:03:41,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:03:41,431 INFO L85 PathProgramCache]: Analyzing trace with hash 616146350, now seen corresponding path program 2 times [2024-10-11 20:03:41,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:03:41,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1140831290] [2024-10-11 20:03:41,432 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 20:03:41,432 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:03:41,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:03:41,433 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:03:41,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2024-10-11 20:03:41,485 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-11 20:03:41,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:03:41,487 INFO L255 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-11 20:03:41,488 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:03:41,496 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 20:03:41,688 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-11 20:03:41,688 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:03:42,229 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-11 20:03:42,229 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:03:42,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1140831290] [2024-10-11 20:03:42,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1140831290] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:03:42,229 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:03:42,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2024-10-11 20:03:42,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907297462] [2024-10-11 20:03:42,229 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:03:42,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 20:03:42,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:03:42,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 20:03:42,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-11 20:03:43,157 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-10-11 20:03:43,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 74 transitions, 498 flow. Second operand has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:03:43,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:03:43,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-10-11 20:03:43,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:03:43,533 INFO L124 PetriNetUnfolderBase]: 743/1354 cut-off events. [2024-10-11 20:03:43,533 INFO L125 PetriNetUnfolderBase]: For 779/779 co-relation queries the response was YES. [2024-10-11 20:03:43,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3843 conditions, 1354 events. 743/1354 cut-off events. For 779/779 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 6668 event pairs, 412 based on Foata normal form. 22/1376 useless extension candidates. Maximal degree in co-relation 3785. Up to 964 conditions per place. [2024-10-11 20:03:43,541 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 60 selfloop transitions, 23 changer transitions 0/89 dead transitions. [2024-10-11 20:03:43,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 89 transitions, 716 flow [2024-10-11 20:03:43,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 20:03:43,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 20:03:43,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 108 transitions. [2024-10-11 20:03:43,543 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.54 [2024-10-11 20:03:43,544 INFO L175 Difference]: Start difference. First operand has 83 places, 74 transitions, 498 flow. Second operand 5 states and 108 transitions. [2024-10-11 20:03:43,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 89 transitions, 716 flow [2024-10-11 20:03:43,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 89 transitions, 702 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 20:03:43,550 INFO L231 Difference]: Finished difference. Result has 83 places, 73 transitions, 523 flow [2024-10-11 20:03:43,550 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=477, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=523, PETRI_PLACES=83, PETRI_TRANSITIONS=73} [2024-10-11 20:03:43,552 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 42 predicate places. [2024-10-11 20:03:43,552 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 73 transitions, 523 flow [2024-10-11 20:03:43,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:03:43,552 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:03:43,552 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:03:43,556 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2024-10-11 20:03:43,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:03:43,753 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-10-11 20:03:43,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:03:43,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1913316733, now seen corresponding path program 2 times [2024-10-11 20:03:43,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:03:43,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1076368760] [2024-10-11 20:03:43,754 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 20:03:43,754 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:03:43,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:03:43,755 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:03:43,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2024-10-11 20:03:43,820 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-11 20:03:43,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:03:43,822 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-11 20:03:43,824 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:03:43,835 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 20:03:44,045 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-11 20:03:44,045 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:03:44,046 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:03:44,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1076368760] [2024-10-11 20:03:44,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1076368760] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:03:44,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:03:44,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 20:03:44,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146225898] [2024-10-11 20:03:44,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:03:44,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 20:03:44,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:03:44,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 20:03:44,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 20:03:44,211 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 40 [2024-10-11 20:03:44,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 73 transitions, 523 flow. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:03:44,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:03:44,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 40 [2024-10-11 20:03:44,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:03:44,587 INFO L124 PetriNetUnfolderBase]: 743/1321 cut-off events. [2024-10-11 20:03:44,587 INFO L125 PetriNetUnfolderBase]: For 1405/1405 co-relation queries the response was YES. [2024-10-11 20:03:44,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3860 conditions, 1321 events. 743/1321 cut-off events. For 1405/1405 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 6155 event pairs, 299 based on Foata normal form. 64/1385 useless extension candidates. Maximal degree in co-relation 3802. Up to 655 conditions per place. [2024-10-11 20:03:44,596 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 66 selfloop transitions, 17 changer transitions 0/85 dead transitions. [2024-10-11 20:03:44,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 85 transitions, 774 flow [2024-10-11 20:03:44,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 20:03:44,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 20:03:44,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 92 transitions. [2024-10-11 20:03:44,598 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46 [2024-10-11 20:03:44,598 INFO L175 Difference]: Start difference. First operand has 83 places, 73 transitions, 523 flow. Second operand 5 states and 92 transitions. [2024-10-11 20:03:44,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 85 transitions, 774 flow [2024-10-11 20:03:44,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 85 transitions, 700 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-11 20:03:44,606 INFO L231 Difference]: Finished difference. Result has 77 places, 69 transitions, 481 flow [2024-10-11 20:03:44,606 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=447, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=481, PETRI_PLACES=77, PETRI_TRANSITIONS=69} [2024-10-11 20:03:44,607 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 36 predicate places. [2024-10-11 20:03:44,608 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 69 transitions, 481 flow [2024-10-11 20:03:44,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:03:44,609 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:03:44,609 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:03:44,612 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2024-10-11 20:03:44,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:03:44,812 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-10-11 20:03:44,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:03:44,812 INFO L85 PathProgramCache]: Analyzing trace with hash -2050615534, now seen corresponding path program 1 times [2024-10-11 20:03:44,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:03:44,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [674556023] [2024-10-11 20:03:44,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:03:44,813 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:03:44,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:03:44,814 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:03:44,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2024-10-11 20:03:44,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:03:44,880 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 20:03:44,881 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:03:44,923 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:03:44,923 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:03:45,017 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:03:45,018 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:03:45,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [674556023] [2024-10-11 20:03:45,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [674556023] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:03:45,018 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:03:45,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-10-11 20:03:45,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41870355] [2024-10-11 20:03:45,018 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:03:45,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 20:03:45,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:03:45,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 20:03:45,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-10-11 20:03:45,019 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 40 [2024-10-11 20:03:45,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 69 transitions, 481 flow. Second operand has 8 states, 8 states have (on average 19.0) internal successors, (152), 8 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:03:45,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:03:45,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 40 [2024-10-11 20:03:45,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:03:45,559 INFO L124 PetriNetUnfolderBase]: 1328/2350 cut-off events. [2024-10-11 20:03:45,559 INFO L125 PetriNetUnfolderBase]: For 1205/1205 co-relation queries the response was YES. [2024-10-11 20:03:45,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6658 conditions, 2350 events. 1328/2350 cut-off events. For 1205/1205 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 12351 event pairs, 221 based on Foata normal form. 240/2590 useless extension candidates. Maximal degree in co-relation 6602. Up to 529 conditions per place. [2024-10-11 20:03:45,573 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 145 selfloop transitions, 25 changer transitions 0/172 dead transitions. [2024-10-11 20:03:45,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 172 transitions, 1244 flow [2024-10-11 20:03:45,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 20:03:45,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 20:03:45,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 203 transitions. [2024-10-11 20:03:45,576 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.725 [2024-10-11 20:03:45,576 INFO L175 Difference]: Start difference. First operand has 77 places, 69 transitions, 481 flow. Second operand 7 states and 203 transitions. [2024-10-11 20:03:45,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 172 transitions, 1244 flow [2024-10-11 20:03:45,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 172 transitions, 1150 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-11 20:03:45,583 INFO L231 Difference]: Finished difference. Result has 85 places, 84 transitions, 645 flow [2024-10-11 20:03:45,584 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=447, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=645, PETRI_PLACES=85, PETRI_TRANSITIONS=84} [2024-10-11 20:03:45,584 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 44 predicate places. [2024-10-11 20:03:45,584 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 84 transitions, 645 flow [2024-10-11 20:03:45,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.0) internal successors, (152), 8 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:03:45,585 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:03:45,585 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:03:45,589 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2024-10-11 20:03:45,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:03:45,785 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-10-11 20:03:45,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:03:45,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1281026797, now seen corresponding path program 1 times [2024-10-11 20:03:45,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:03:45,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1366544286] [2024-10-11 20:03:45,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:03:45,786 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:03:45,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:03:45,790 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:03:45,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2024-10-11 20:03:45,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:03:45,856 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-11 20:03:45,857 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:03:45,946 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:03:45,947 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:03:45,988 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:03:45,988 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:03:45,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1366544286] [2024-10-11 20:03:45,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1366544286] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 20:03:45,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 20:03:45,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-10-11 20:03:45,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398641468] [2024-10-11 20:03:45,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:03:45,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 20:03:45,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:03:45,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 20:03:45,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-10-11 20:03:45,990 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 40 [2024-10-11 20:03:45,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 84 transitions, 645 flow. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:03:45,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:03:45,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 40 [2024-10-11 20:03:45,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:03:46,258 INFO L124 PetriNetUnfolderBase]: 1298/2284 cut-off events. [2024-10-11 20:03:46,259 INFO L125 PetriNetUnfolderBase]: For 4201/4201 co-relation queries the response was YES. [2024-10-11 20:03:46,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8290 conditions, 2284 events. 1298/2284 cut-off events. For 4201/4201 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 11673 event pairs, 217 based on Foata normal form. 42/2326 useless extension candidates. Maximal degree in co-relation 8231. Up to 1140 conditions per place. [2024-10-11 20:03:46,274 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 87 selfloop transitions, 31 changer transitions 1/121 dead transitions. [2024-10-11 20:03:46,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 121 transitions, 1067 flow [2024-10-11 20:03:46,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 20:03:46,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 20:03:46,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 109 transitions. [2024-10-11 20:03:46,276 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.68125 [2024-10-11 20:03:46,276 INFO L175 Difference]: Start difference. First operand has 85 places, 84 transitions, 645 flow. Second operand 4 states and 109 transitions. [2024-10-11 20:03:46,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 121 transitions, 1067 flow [2024-10-11 20:03:46,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 121 transitions, 1017 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-10-11 20:03:46,285 INFO L231 Difference]: Finished difference. Result has 89 places, 97 transitions, 843 flow [2024-10-11 20:03:46,286 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=595, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=843, PETRI_PLACES=89, PETRI_TRANSITIONS=97} [2024-10-11 20:03:46,286 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 48 predicate places. [2024-10-11 20:03:46,286 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 97 transitions, 843 flow [2024-10-11 20:03:46,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:03:46,287 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:03:46,287 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:03:46,292 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2024-10-11 20:03:46,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:03:46,488 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-10-11 20:03:46,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:03:46,488 INFO L85 PathProgramCache]: Analyzing trace with hash 826180113, now seen corresponding path program 2 times [2024-10-11 20:03:46,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:03:46,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1132794915] [2024-10-11 20:03:46,489 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 20:03:46,489 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:03:46,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:03:46,492 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:03:46,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2024-10-11 20:03:46,572 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 20:03:46,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:03:46,574 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-11 20:03:46,575 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:03:46,591 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:03:46,591 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:03:46,591 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:03:46,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1132794915] [2024-10-11 20:03:46,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1132794915] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:03:46,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:03:46,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 20:03:46,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427016565] [2024-10-11 20:03:46,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:03:46,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 20:03:46,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:03:46,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 20:03:46,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 20:03:46,593 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 40 [2024-10-11 20:03:46,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 97 transitions, 843 flow. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:03:46,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:03:46,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 40 [2024-10-11 20:03:46,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:03:46,851 INFO L124 PetriNetUnfolderBase]: 1247/2161 cut-off events. [2024-10-11 20:03:46,851 INFO L125 PetriNetUnfolderBase]: For 6812/6812 co-relation queries the response was YES. [2024-10-11 20:03:46,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9317 conditions, 2161 events. 1247/2161 cut-off events. For 6812/6812 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 10607 event pairs, 672 based on Foata normal form. 9/2170 useless extension candidates. Maximal degree in co-relation 9257. Up to 1567 conditions per place. [2024-10-11 20:03:46,861 INFO L140 encePairwiseOnDemand]: 36/40 looper letters, 105 selfloop transitions, 8 changer transitions 8/123 dead transitions. [2024-10-11 20:03:46,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 123 transitions, 1211 flow [2024-10-11 20:03:46,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 20:03:46,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 20:03:46,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 107 transitions. [2024-10-11 20:03:46,862 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.66875 [2024-10-11 20:03:46,862 INFO L175 Difference]: Start difference. First operand has 89 places, 97 transitions, 843 flow. Second operand 4 states and 107 transitions. [2024-10-11 20:03:46,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 123 transitions, 1211 flow [2024-10-11 20:03:46,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 123 transitions, 1183 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 20:03:46,872 INFO L231 Difference]: Finished difference. Result has 93 places, 97 transitions, 850 flow [2024-10-11 20:03:46,872 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=818, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=850, PETRI_PLACES=93, PETRI_TRANSITIONS=97} [2024-10-11 20:03:46,872 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 52 predicate places. [2024-10-11 20:03:46,873 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 97 transitions, 850 flow [2024-10-11 20:03:46,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:03:46,873 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:03:46,873 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 10, 1, 1] [2024-10-11 20:03:46,878 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2024-10-11 20:03:47,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:03:47,074 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-10-11 20:03:47,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:03:47,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1301517866, now seen corresponding path program 3 times [2024-10-11 20:03:47,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:03:47,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [35496294] [2024-10-11 20:03:47,075 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 20:03:47,075 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:03:47,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:03:47,076 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:03:47,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2024-10-11 20:03:47,255 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-10-11 20:03:47,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:03:47,258 INFO L255 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-11 20:03:47,259 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:03:47,266 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 20:03:47,918 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:03:47,919 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:03:49,515 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:03:49,515 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:03:49,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [35496294] [2024-10-11 20:03:49,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [35496294] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:03:49,515 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:03:49,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 24 [2024-10-11 20:03:49,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979353032] [2024-10-11 20:03:49,515 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:03:49,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-11 20:03:49,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:03:49,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-11 20:03:49,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=476, Unknown=0, NotChecked=0, Total=650 [2024-10-11 20:03:51,913 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-10-11 20:03:51,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 97 transitions, 850 flow. Second operand has 26 states, 26 states have (on average 16.76923076923077) internal successors, (436), 26 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:03:51,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:03:51,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-10-11 20:03:51,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:04:04,292 INFO L124 PetriNetUnfolderBase]: 1226/2128 cut-off events. [2024-10-11 20:04:04,292 INFO L125 PetriNetUnfolderBase]: For 7638/7638 co-relation queries the response was YES. [2024-10-11 20:04:04,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9150 conditions, 2128 events. 1226/2128 cut-off events. For 7638/7638 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 10038 event pairs, 893 based on Foata normal form. 12/2140 useless extension candidates. Maximal degree in co-relation 8894. Up to 2079 conditions per place. [2024-10-11 20:04:04,302 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 67 selfloop transitions, 65 changer transitions 0/133 dead transitions. [2024-10-11 20:04:04,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 133 transitions, 1426 flow [2024-10-11 20:04:04,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-10-11 20:04:04,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2024-10-11 20:04:04,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 775 transitions. [2024-10-11 20:04:04,307 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4305555555555556 [2024-10-11 20:04:04,307 INFO L175 Difference]: Start difference. First operand has 93 places, 97 transitions, 850 flow. Second operand 45 states and 775 transitions. [2024-10-11 20:04:04,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 133 transitions, 1426 flow [2024-10-11 20:04:04,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 133 transitions, 1382 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-10-11 20:04:04,323 INFO L231 Difference]: Finished difference. Result has 144 places, 133 transitions, 1302 flow [2024-10-11 20:04:04,324 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=806, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=1302, PETRI_PLACES=144, PETRI_TRANSITIONS=133} [2024-10-11 20:04:04,324 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 103 predicate places. [2024-10-11 20:04:04,325 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 133 transitions, 1302 flow [2024-10-11 20:04:04,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 16.76923076923077) internal successors, (436), 26 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:04:04,326 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:04:04,326 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:04:04,332 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2024-10-11 20:04:04,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:04:04,527 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-10-11 20:04:04,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:04:04,528 INFO L85 PathProgramCache]: Analyzing trace with hash -341994340, now seen corresponding path program 2 times [2024-10-11 20:04:04,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:04:04,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [260611011] [2024-10-11 20:04:04,528 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 20:04:04,528 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:04:04,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:04:04,529 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:04:04,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2024-10-11 20:04:04,595 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 20:04:04,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:04:04,597 INFO L255 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-11 20:04:04,598 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:04:04,643 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-11 20:04:04,644 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:04:04,644 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:04:04,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [260611011] [2024-10-11 20:04:04,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [260611011] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:04:04,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:04:04,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 20:04:04,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727690177] [2024-10-11 20:04:04,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:04:04,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 20:04:04,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:04:04,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 20:04:04,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-11 20:04:04,645 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 40 [2024-10-11 20:04:04,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 133 transitions, 1302 flow. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:04:04,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:04:04,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 40 [2024-10-11 20:04:04,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:04:05,062 INFO L124 PetriNetUnfolderBase]: 1280/2218 cut-off events. [2024-10-11 20:04:05,062 INFO L125 PetriNetUnfolderBase]: For 6398/6398 co-relation queries the response was YES. [2024-10-11 20:04:05,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9425 conditions, 2218 events. 1280/2218 cut-off events. For 6398/6398 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 10784 event pairs, 672 based on Foata normal form. 18/2236 useless extension candidates. Maximal degree in co-relation 9331. Up to 1627 conditions per place. [2024-10-11 20:04:05,074 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 151 selfloop transitions, 29 changer transitions 0/182 dead transitions. [2024-10-11 20:04:05,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 182 transitions, 1962 flow [2024-10-11 20:04:05,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 20:04:05,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 20:04:05,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2024-10-11 20:04:05,076 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6333333333333333 [2024-10-11 20:04:05,076 INFO L175 Difference]: Start difference. First operand has 144 places, 133 transitions, 1302 flow. Second operand 6 states and 152 transitions. [2024-10-11 20:04:05,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 182 transitions, 1962 flow [2024-10-11 20:04:05,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 182 transitions, 1778 flow, removed 63 selfloop flow, removed 20 redundant places. [2024-10-11 20:04:05,096 INFO L231 Difference]: Finished difference. Result has 132 places, 142 transitions, 1310 flow [2024-10-11 20:04:05,097 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1118, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1310, PETRI_PLACES=132, PETRI_TRANSITIONS=142} [2024-10-11 20:04:05,097 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 91 predicate places. [2024-10-11 20:04:05,097 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 142 transitions, 1310 flow [2024-10-11 20:04:05,098 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:04:05,098 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:04:05,098 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:04:05,104 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2024-10-11 20:04:05,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:04:05,299 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-10-11 20:04:05,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:04:05,300 INFO L85 PathProgramCache]: Analyzing trace with hash -902115202, now seen corresponding path program 3 times [2024-10-11 20:04:05,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:04:05,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1198272765] [2024-10-11 20:04:05,300 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 20:04:05,300 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:04:05,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:04:05,301 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:04:05,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2024-10-11 20:04:05,388 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-11 20:04:05,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:04:05,390 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-11 20:04:05,391 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:04:05,409 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-11 20:04:05,409 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:04:05,409 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:04:05,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1198272765] [2024-10-11 20:04:05,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1198272765] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:04:05,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:04:05,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 20:04:05,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972953829] [2024-10-11 20:04:05,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:04:05,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 20:04:05,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:04:05,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 20:04:05,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-11 20:04:05,411 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 40 [2024-10-11 20:04:05,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 142 transitions, 1310 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:04:05,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:04:05,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 40 [2024-10-11 20:04:05,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:04:05,806 INFO L124 PetriNetUnfolderBase]: 1430/2470 cut-off events. [2024-10-11 20:04:05,807 INFO L125 PetriNetUnfolderBase]: For 9514/9514 co-relation queries the response was YES. [2024-10-11 20:04:05,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11466 conditions, 2470 events. 1430/2470 cut-off events. For 9514/9514 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 12130 event pairs, 412 based on Foata normal form. 51/2521 useless extension candidates. Maximal degree in co-relation 11378. Up to 1983 conditions per place. [2024-10-11 20:04:05,820 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 153 selfloop transitions, 14 changer transitions 0/169 dead transitions. [2024-10-11 20:04:05,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 169 transitions, 1881 flow [2024-10-11 20:04:05,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 20:04:05,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 20:04:05,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 102 transitions. [2024-10-11 20:04:05,822 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6375 [2024-10-11 20:04:05,822 INFO L175 Difference]: Start difference. First operand has 132 places, 142 transitions, 1310 flow. Second operand 4 states and 102 transitions. [2024-10-11 20:04:05,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 169 transitions, 1881 flow [2024-10-11 20:04:05,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 169 transitions, 1832 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-10-11 20:04:05,842 INFO L231 Difference]: Finished difference. Result has 134 places, 144 transitions, 1326 flow [2024-10-11 20:04:05,842 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1261, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1326, PETRI_PLACES=134, PETRI_TRANSITIONS=144} [2024-10-11 20:04:05,843 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 93 predicate places. [2024-10-11 20:04:05,843 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 144 transitions, 1326 flow [2024-10-11 20:04:05,843 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:04:05,843 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:04:05,843 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:04:05,848 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2024-10-11 20:04:06,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:04:06,044 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-10-11 20:04:06,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:04:06,045 INFO L85 PathProgramCache]: Analyzing trace with hash -830039810, now seen corresponding path program 4 times [2024-10-11 20:04:06,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:04:06,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [942408286] [2024-10-11 20:04:06,045 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 20:04:06,045 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:04:06,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:04:06,046 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:04:06,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2024-10-11 20:04:06,105 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 20:04:06,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:04:06,107 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-11 20:04:06,107 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:04:06,119 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-10-11 20:04:06,119 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:04:06,119 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:04:06,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [942408286] [2024-10-11 20:04:06,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [942408286] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:04:06,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:04:06,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 20:04:06,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584205402] [2024-10-11 20:04:06,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:04:06,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 20:04:06,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:04:06,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 20:04:06,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 20:04:06,121 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 40 [2024-10-11 20:04:06,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 144 transitions, 1326 flow. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:04:06,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:04:06,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 40 [2024-10-11 20:04:06,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:04:06,467 INFO L124 PetriNetUnfolderBase]: 1400/2440 cut-off events. [2024-10-11 20:04:06,467 INFO L125 PetriNetUnfolderBase]: For 10280/10280 co-relation queries the response was YES. [2024-10-11 20:04:06,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11537 conditions, 2440 events. 1400/2440 cut-off events. For 10280/10280 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 12115 event pairs, 659 based on Foata normal form. 30/2470 useless extension candidates. Maximal degree in co-relation 11447. Up to 1663 conditions per place. [2024-10-11 20:04:06,482 INFO L140 encePairwiseOnDemand]: 36/40 looper letters, 174 selfloop transitions, 9 changer transitions 10/195 dead transitions. [2024-10-11 20:04:06,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 195 transitions, 2243 flow [2024-10-11 20:04:06,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 20:04:06,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 20:04:06,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 103 transitions. [2024-10-11 20:04:06,483 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.64375 [2024-10-11 20:04:06,483 INFO L175 Difference]: Start difference. First operand has 134 places, 144 transitions, 1326 flow. Second operand 4 states and 103 transitions. [2024-10-11 20:04:06,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 195 transitions, 2243 flow [2024-10-11 20:04:06,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 195 transitions, 2229 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-11 20:04:06,502 INFO L231 Difference]: Finished difference. Result has 138 places, 145 transitions, 1371 flow [2024-10-11 20:04:06,503 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1315, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1371, PETRI_PLACES=138, PETRI_TRANSITIONS=145} [2024-10-11 20:04:06,503 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 97 predicate places. [2024-10-11 20:04:06,503 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 145 transitions, 1371 flow [2024-10-11 20:04:06,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:04:06,504 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:04:06,504 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:04:06,508 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Ended with exit code 0 [2024-10-11 20:04:06,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:04:06,704 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-10-11 20:04:06,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:04:06,705 INFO L85 PathProgramCache]: Analyzing trace with hash 575259628, now seen corresponding path program 5 times [2024-10-11 20:04:06,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:04:06,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1193713424] [2024-10-11 20:04:06,705 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 20:04:06,705 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:04:06,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:04:06,707 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:04:06,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2024-10-11 20:04:06,849 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-10-11 20:04:06,849 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:04:06,858 INFO L255 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-11 20:04:06,859 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:04:07,377 INFO L349 Elim1Store]: treesize reduction 164, result has 7.3 percent of original size [2024-10-11 20:04:07,378 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 12 new quantified variables, introduced 28 case distinctions, treesize of input 178 treesize of output 90 [2024-10-11 20:04:07,464 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 20:04:07,464 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:04:10,516 INFO L349 Elim1Store]: treesize reduction 891, result has 21.9 percent of original size [2024-10-11 20:04:10,517 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 28 new quantified variables, introduced 120 case distinctions, treesize of input 5727 treesize of output 496